620800478464 has 36 divisors (see below), whose sum is σ = 1259490346660. Its totient is φ = 305311703040.

The previous prime is 620800478437. The next prime is 620800478503. The reversal of 620800478464 is 464874008026.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15217689600 + 605582788864 = 123360^2 + 778192^2 .

It is a super-2 number, since 2×620800478464² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19861449 + ... + 19892680.

Almost surely, 2^620800478464 is an apocalyptic number.

620800478464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

620800478464 is an abundant number, since it is smaller than the sum of its proper divisors (638689868196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620800478464 is an equidigital number, since it uses as much as digits as its factorization.

620800478464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39754206 (or 39754192 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 49.

The spelling of 620800478464 in words is "six hundred twenty billion, eight hundred million, four hundred seventy-eight thousand, four hundred sixty-four".